:root{
  --turq:#0f9d90; --turq-600:#0b7f74;
  --slate:#334155; --muted:#64748b;
  --bg:#f8fafc; --border:#e2e8f0;
  --green:#16a34a; --red:#dc2626;

  --accent:#0ea5e9;      /* sky-500 */
  --accent-600:#0284c7;  /* sky-600 */
}
*{box-sizing:border-box}
body{
  font-family:'Tajawal',Tahoma,Arial,sans-serif;
  background:var(--bg);
  margin:0;
  color:#0f172a;
  line-height:1.6
}
.wrap{max-width:1100px;margin:0 auto;padding:24px}
h1{margin:8px 0 4px;font-size:28px;font-weight:800;line-height:1.35}
.muted{color:var(--muted)}
.card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:18px}
.row{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:860px){ .row-2{grid-template-columns:1fr 1fr} }
.pill{display:inline-flex;align-items:center;justify-content:center;height:36px;padding:0 14px;border-radius:999px;margin-inline-end:8px;font-size:14px;border:1px solid var(--border);background:#fff}
.pill.active{background:var(--turq);color:#fff;border-color:transparent;box-shadow:0 8px 16px rgba(15,157,144,.15)}
input,select{
  width:100%;
  padding:12px;
  border:1px solid #cbd5e1;
  border-radius:12px;
  background:#fff;
  font-family:'Tajawal',Tahoma,Arial,sans-serif;
}
label{display:block;margin-bottom:6px;color:#334155;font-weight:700}
.btn{
  border:0;
  border-radius:14px;
  padding:10px 18px;
  font-weight:700;
  cursor:pointer;
  font-family:'Tajawal',Tahoma,Arial,sans-serif;
}
.btn-primary{background:var(--turq);color:#fff}
.btn-primary:hover{background:var(--turq-600)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-600)}
.btn-ghost{background:#fff;border:1px solid #cbd5e1}
.btn:disabled{opacity:.7;cursor:not-allowed}
.spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.5);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;margin-inline-start:8px;vertical-align:-3px}
.spinner.turq{border-color:rgba(15,157,144,.25);border-top-color:var(--turq)}
.spinner.small{width:14px;height:14px;margin-inline-start:6px;vertical-align:-2px}
@keyframes spin{to{transform:rotate(360deg)}}

.alert{display:none;margin:10px 0 12px;padding:10px 12px;border-radius:10px;font-weight:700}
.alert.ok{display:block;background:#ecfeff;border:1px solid #a5f3fc;color:#155e75}
.alert.err{display:block;background:#fdecec;border:1px solid #f3b4b4;color:#b42318}

.field.invalid input,.field.invalid select{border-color:#ef4444;box-shadow:0 0 0 3px rgba(239,68,68,.15)}
.field .err{display:none;color:#b91c1c;font-size:12px;margin-top:4px}
.field.invalid .err{display:block}

.switch{--w:48px;--h:26px;--p:3px;width:var(--w);height:var(--h);border-radius:999px;background:#e5e7eb;position:relative;display:inline-block;transition:background .15s}
.switch__dot{position:absolute;top:var(--p);left:var(--p);width:calc(var(--h) - var(--p)*2);height:calc(var(--h) - var(--p)*2);border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.15);transition:left .15s}
.switch.on{background:#22c55e}.switch.on .switch__dot{left:calc(var(--w) - var(--h) + var(--p))}
.switch.locked{pointer-events:none;opacity:.9}
.subject-row{display:flex;align-items:center;justify-content:space-between;border:1px solid var(--border);border-radius:12px;padding:12px}
.subject-row.locked{cursor:default}

.subject-title{font-weight:800;font-size:18px;color:#0f172a}
.subject-teacher{font-weight:400;font-size:13px;color:#475569;margin-top:4px}
.subject-price{font-weight:700;font-size:12px;color:#0f9d90;margin-top:6px}

.cards-wrap{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.class-card{width:150px;border-radius:10px;overflow:hidden;border:1px solid var(--border);background:#fff;box-shadow:0 2px 6px rgba(0,0,0,.06);transition:transform .18s;text-align:right}
.class-card:hover{transform:scale(1.03)}
.class-card img{width:150px;height:200px;object-fit:cover;display:block;margin:0 auto}
.card-body{padding:8px;font-size:12px;line-height:1.55;color:#0f172a}
.card-body .sub{color:#64748b}

/* روابط البطاقة */
.link-row{
  margin-top:6px;
  display:flex;
  flex-direction:column;
  gap:6px;
  align-items:stretch;
}
.cta{
  display:flex;
  align-items:center;
  justify-content:center;
  width:100%;
  height:36px;
  padding:0 10px;
  border-radius:10px;
  font-size:12px;
  font-weight:700;
  text-decoration:none;
  user-select:none;
  white-space:nowrap;
  border:1px solid var(--border);
  background:#f8fafc;
  color:#0f172a;
}
.cta--wa{ background:#e9f7ef; border-color:#badbcc; color:#0f5132 }
.cta--gc{ background:#eef2ff; border-color:#c7d2fe; color:#3730a3 }
.cta--gc-prev{ background:#fff7ed; border-color:#fed7aa; color:#9a3412; }
.cta--site{ background:#e0f2fe; border-color:#bae6fd; color:#0c4a6e }
.cta.disabled{ opacity:.6; cursor:not-allowed }

.section-title{display:block;text-align:center;font-weight:800;margin:10px 0;background:#e6fffb;border:1px solid #99f6e4;color:#0f9d90;border-radius:10px;padding:8px 12px;font-size:15px}
.banner{border-radius:12px;padding:10px 14px;text-align:center;line-height:1.7}
.banner.info {background:#e6fffb;border:1px solid #99f6e4;color:#0f766e}
.banner-success{background:#ecfdf5;border:1px solid #a7f3d0;color:#065f46}
.banner-danger-light{background:#fef2f2;border:1px solid #fecaca;color:#991b1b}

.cards-2{display:grid;grid-template-columns:1fr;gap:12px}
.card-info{order:-1} .card-help{order:2}
/* ✅ صفحة الانتهاء: عمود واحد فقط (مثل النموذج) */
@media(min-width:900px){ .cards-2{grid-template-columns:1fr} }

.info-grid{display:grid;grid-template-columns:1fr;gap:10px;width:100%}
.kv{display:flex;align-items:center;justify-content:space-between;border:1px solid var(--border);background:#f8fafc;border-radius:10px;padding:10px;gap:8px;width:100%}
.kv .k{font-weight:800;color:#334155;white-space:nowrap;flex:0 0 auto}
.kv .v{flex:1;text-align:right;direction:rtl}
.kv input{flex:1;min-width:0;margin-inline-start:8px}
.v-center{direction:ltr;text-align:center}
.btn-copy{padding:6px 10px;border-radius:8px}
.kv-link{display:flex;align-items:center;justify-content:space-between;text-decoration:none;color:inherit}
.kv-link:hover{background:#f1f5f9}

.amount{color:#0f9d90;font-size:18px;font-weight:800}
.amt-due{color:#0f9d90;font-weight:800}
.amt-remain{color:#dc2626;font-weight:800}

@media(max-width:480px){
  .wrap{padding:16px}
  .card{padding:14px;border-radius:14px}
  .kv{padding:9px;border-radius:10px}
  h1{font-size:26px}
  .muted,.card p{line-height:1.8}
}
#dueBox .kv{margin:6px 0}
@media(max-width:480px){#dueBox .kv{margin:8px 0}}

.btn-wa{background:#25D366;color:#fff;border:0;border-radius:14px;padding:10px 16px;font-weight:700;cursor:pointer}
.btn-wa:hover{filter:brightness(0.95)}
.btn-wa{display:inline-flex;align-items:center;gap:8px}
.btn-wa .wa-ic{width:18px;height:18px;flex:0 0 18px}

.hint-danger {background:#fdecec;border:1px solid #f3b4b4;color:#b42318;padding:12px 14px;border-radius:10px;font-weight:600;line-height:1.6;margin:10px 0}
.hint-hidden { display: none; }

.button[disabled], button[disabled] { opacity:.55; cursor:not-allowed!important }
#receipt{margin-top:12px}

.wa-link{font-weight:800;text-decoration:underline}

/* ✅ زر تسجيل الدخول: أزرق + نفس مقاس واتساب */
.btn-login{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:44px;
  padding:10px 16px;
  border-radius:14px;
  font-weight:700;
  cursor:pointer;
  background: var(--accent);
  color:#fff;
  border:1px solid transparent;
}
.btn-login:hover{ background: var(--accent-600); }

/* أيقونة تسجيل الدخول */
.btn-login .login-ic{
  width:18px;
  height:18px;
  flex:0 0 18px;
  display:inline-block;
}

/* روابط واتساب في الفوتر بنفس لون النص */
.wa-link-muted{ color: inherit; text-decoration: none; border-bottom: 1px dotted currentColor; padding-bottom: 1px }
.wa-link-muted:hover{ text-decoration: underline }

.banner-warning {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
  margin-top: 12px;
  border-radius: 8px;
}